86 lines
2.3 KiB
Haskell
86 lines
2.3 KiB
Haskell
{-# OPTIONS_GHC -Wno-orphans #-}
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{-# LANGUAGE CPP #-}
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{-# LANGUAGE DeriveDataTypeable #-}
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{-# LANGUAGE DeriveLift #-}
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{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE StandaloneDeriving #-}
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{-# LANGUAGE TemplateHaskellQuotes #-}
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{-|
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Module : GHCup.Utils.Version.QQ
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Description : Version quasi-quoters
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Copyright : (c) Julian Ospald, 2020
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License : LGPL-3.0
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Maintainer : hasufell@hasufell.de
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Stability : experimental
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Portability : portable
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-}
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module GHCup.Prelude.Version.QQ where
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import Data.Data
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import Data.Text ( Text )
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import Data.Versions
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#if !MIN_VERSION_base(4,13,0)
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import GHC.Base
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#endif
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import Language.Haskell.TH
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import Language.Haskell.TH.Quote ( QuasiQuoter(..) )
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import Language.Haskell.TH.Syntax ( dataToExpQ )
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import qualified Data.Text as T
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import qualified Language.Haskell.TH.Syntax as TH
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#if !MIN_VERSION_base(4,13,0)
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deriving instance Lift (NonEmpty Word)
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deriving instance Lift (NonEmpty MChunk)
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#endif
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qq :: (Text -> Q Exp) -> QuasiQuoter
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qq quoteExp' = QuasiQuoter
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{ quoteExp = \s -> quoteExp' . T.pack $ s
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, quotePat = \_ ->
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fail "illegal QuasiQuote (allowed as expression only, used as a pattern)"
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, quoteType = \_ ->
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fail "illegal QuasiQuote (allowed as expression only, used as a type)"
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, quoteDec = \_ -> fail
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"illegal QuasiQuote (allowed as expression only, used as a declaration)"
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}
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vver :: QuasiQuoter
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vver = qq mkV
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where
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mkV :: Text -> Q Exp
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mkV = either (fail . show) liftDataWithText . version
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mver :: QuasiQuoter
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mver = qq mkV
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where
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mkV :: Text -> Q Exp
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mkV = either (fail . show) liftDataWithText . mess
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sver :: QuasiQuoter
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sver = qq mkV
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where
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mkV :: Text -> Q Exp
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mkV = either (fail . show) liftDataWithText . semver
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vers :: QuasiQuoter
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vers = qq mkV
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where
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mkV :: Text -> Q Exp
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mkV = either (fail . show) liftDataWithText . versioning
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pver :: QuasiQuoter
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pver = qq mkV
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where
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mkV :: Text -> Q Exp
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mkV = either (fail . show) liftDataWithText . pvp
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-- https://stackoverflow.com/questions/38143464/cant-find-inerface-file-declaration-for-variable
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liftText :: T.Text -> Q Exp
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liftText txt = AppE (VarE 'T.pack) <$> TH.lift (T.unpack txt)
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liftDataWithText :: Data a => a -> Q Exp
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liftDataWithText = dataToExpQ (fmap liftText . cast)
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